As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT CABIN FLOOR INTERCOSTAL AT BS 913.74 RBL 51 TO RBL 56 HAS EXISTING DOUBLE DRILLED FASTENER HOLE AT O B END (SUPPORT) INTERCOSTAL AT BS 913.74 RBL 56. REPLACED IAW B737 400 SRM CH. 51 40 05 USING BAC 1506 43 7075773511 PO NR 166385 AND INSTALLED IAW B737 400 SRM CH 51 40 02.